I have a github account, it is oanhnn, but when i join a private project in company, i have to use an other github account, eg suppermen. I want using two accounts without typing password each times, when git push or pull.

Using ssh keys and ssh configure file to alias host and using multiple github accounts

1. Make key pair for each accounts and add it to github accounts.
2. Make ssh configure file (~/.ssh/config) like:

   # Default github account: oanhnn
   Host github.com
      HostName github.com
      IdentityFile ~/.ssh/oanhnn_key
      
   # Other github account: suppermen
   Host github-suppermen
      HostName github.com
      IdentityFile ~/.ssh/suppermen_key
   

3. Added ssh key to your agent by command:

   $ ssh-add ~/.ssh/oanhnn_key
   $ ssh-add ~/.ssh/suppermen_key
   

4. Check that repo recognizes keys.

   $ ssh -T git@github.com
   $ ssh -T git@github-suppermen
   

5. Clone projects

   $ git clone git@github-suppermen:org2/project2.git /path/to/project2
   $ cd /path/to/project2
   $ git config user.email "suppermen@org2.com"
   $ git config user.name  "Supper Men"
   

Done! Have goodluck!